subterranean river is a type of…
- en river (n) ➜
- en underground (n) ➜
- en river (n) ➜
- en underground (n) ➜
- en underground source of water (n) ➜
Links to other resources
- sw.opencyc.org /2012/05/10/concept/en/Subterranean_river
- sw.opencyc.org /2012/05/10/concept/en/River_Underground